196781847401 has 2 divisors, whose sum is σ = 196781847402. Its totient is φ = 196781847400.

The previous prime is 196781847397. The next prime is 196781847467. The reversal of 196781847401 is 104748187691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187271697001 + 9510150400 = 432749^2 + 97520^2 .

It is a cyclic number.

It is not a de Polignac number, because 196781847401 - 2² = 196781847397 is a prime.

It is not a weakly prime, because it can be changed into another prime (196781847601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98390923700 + 98390923701.

It is an arithmetic number, because the mean of its divisors is an integer number (98390923701).

Almost surely, 2^196781847401 is an apocalyptic number.

It is an amenable number.

196781847401 is a deficient number, since it is larger than the sum of its proper divisors (1).

196781847401 is an equidigital number, since it uses as much as digits as its factorization.

196781847401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 196781847401 in words is "one hundred ninety-six billion, seven hundred eighty-one million, eight hundred forty-seven thousand, four hundred one".